Back to results
US 2026/0201791 A1Published application
A stochastic inversion method for equivalent hydraulic fracture characterization using distributed fiber-optic strain measurements
AssigneeSchlumberger Technology Corporation
InventorsYongzan LIU, Lin LIANG, Smaine ZEROUG
Life of this patent
Estimating the term…
Abstract
Embodiments presented provide for evaluating fracture characterization resulting from hydraulic fracturing. In embodiments, fiber-optic elements are placed in a wellbore and subjected to forces from a hydraulic fracture operation occurring within a geological stratum. Readings from the fiber-optic elements are taken and evaluated to form a fracture characterization of the geological stratum.
Claims16
A method, comprising:
- A) fracturing a geological stratum in a first well;
- B) obtaining data at a second well through a fiber-optic system;
- C) converting the obtained data at the second well to a strain rate;
- D) integrating the strain rate to obtain measured distributed strain data;
- E) creating a model and calculate simulated strain data;
- F) comparing the measured distributed strain data and the simulated strain data;
- G) when the comparing of the measured distributed strain data and the simulated strain data achieves an acceptance level, making the model a recorded finalized model and proceeding to step J;
- H) optimizing the model and running the model to calculate new simulated strain data when the comparing of the measured distributed strain data and the simulated strain data does not achieve the acceptance level;
- I) performing steps F through I, until the finalized model is recorded;
- and
- J) displaying the recorded finalized model.
8 more elements
A method for performing a hydraulic fracture characterization, comprising:
- A) hydraulically fracturing a geological stratum in a first well;
- B) obtaining acoustic data at a second well through a fiber-optic system placed within the second well, the acoustic data generated by propagating fractures in the geological stratum;
- C) converting the acoustic data to a set of strain rate data points;
- D) integrating the strain rate data points to obtain a set of measured distributed strain data points;
- E) creating a forward model and calculating simulated fracture induced distributed strain data;
- F) comparing the simulated fracture induced distributed strain data to the set of measured distributed strain data points;
- G) when the comparing of the simulated fracture induced distributed strain data to the set of measured distributed strain data points reaches an acceptance level, defining the model as a recorded finalized model and proceeding to step J;
- H) optimizing the model and calculating new simulated fracture induced distributed strain data when the comparing of the simulated fracture induced distributed strain data to the set of measured distributed strain data points does not achieve the acceptance level;
- I) performing steps F through I, until the model is recorded as the finalized model;
- and
- J) displaying the recorded finalized model.
8 more elements
Dependencies are inferred from the claim text.